WO2021000617A1 - Poudre d'alliage d'aluminium contenant des particules de céramique tib2 et application de celle-ci - Google Patents

Poudre d'alliage d'aluminium contenant des particules de céramique tib2 et application de celle-ci Download PDF

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Publication number
WO2021000617A1
WO2021000617A1 PCT/CN2020/083119 CN2020083119W WO2021000617A1 WO 2021000617 A1 WO2021000617 A1 WO 2021000617A1 CN 2020083119 W CN2020083119 W CN 2020083119W WO 2021000617 A1 WO2021000617 A1 WO 2021000617A1
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Prior art keywords
tib
aluminum alloy
alloy powder
ceramic particles
powder containing
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PCT/CN2020/083119
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English (en)
Chinese (zh)
Inventor
吴一
夏存娟
廉清
王浩伟
谢薇
王鹏举
肖亚开
Original Assignee
上海交通大学
安徽相邦复合材料有限公司
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Publication of WO2021000617A1 publication Critical patent/WO2021000617A1/fr
Priority to AU2021100222A priority Critical patent/AU2021100222A4/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/20—Direct sintering or melting
    • B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
    • B22F1/0003—
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y70/00—Materials specially adapted for additive manufacturing
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
    • C22C32/0047—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents
    • C22C32/0073—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents only borides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/30—Process control
    • B22F10/36—Process control of energy beam parameters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/30—Process control
    • B22F10/36—Process control of energy beam parameters
    • B22F10/366—Scanning parameters, e.g. hatch distance or scanning strategy
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/50—Treatment of workpieces or articles during build-up, e.g. treatments applied to fused layers during build-up
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

Definitions

  • the invention belongs to the technical field of material preparation and relates to an aluminum alloy containing ceramic particles.
  • Laser additive manufacturing uses a laser as a heat source to melt metal powder, based on three-dimensional model data, and constructs entities by layer-by-layer manufacturing.
  • Laser additive manufacturing technology breaks the limitations of molds and shortens the material development cycle. It can also reduce weight without losing strength through topology optimization and lattice structure. It has a broad field of high-end fields such as aerospace, national defense and military. Application prospects.
  • Aluminum alloy has the characteristics of low density and high specific strength. It is one of the important raw materials in the fields of aerospace, national defense and military industry. However, due to the disadvantages of poor fluidity, high laser reflectivity, and easy oxidation of aluminum, samples formed by laser additive manufacturing often have many defects. Current research and applications are mostly limited to Al-Si alloys, such as A356, AlSi10Mg, AlSi12 Etc. This is due to the good casting properties of Al-Si alloys, such as better fluidity and lower shrinkage. However, the mechanical properties of Al-Si alloys are far from meeting the requirements for use, which are manifested in low strength and poor plasticity.
  • the purpose of the present invention is to provide an aluminum alloy powder containing TiB 2 ceramic particles and an application thereof, so as to overcome the defects of the prior art and meet people's needs.
  • the aluminum alloy powder containing TiB 2 ceramic particles contains Mg, Sc, Zr, Mn and TiB 2 ;
  • the method specified in ASTM B557-15 is used for testing. After heat treatment, the yield strength is 530MPa ⁇ 545MPa; the tensile strength is 530MPa ⁇ 550MPa, and the elongation after fracture is 1.5%-6.5%;
  • the aluminum alloy powder containing TiB 2 ceramic particles includes the following mass fraction components:
  • Mg 3.0-15.0%, preferably 4.0-6.0%
  • Zr 0.1-3.0%, preferably, 0.1-1.0%
  • Mn 0.1-2.0%, preferably 0.1-1.0%
  • TiB 2 0.5-12.0%, preferably 1.0-6.0%, particularly preferably 1.0-4.5%,
  • the balance is Al and unavoidable impurities
  • the TiB 2 exists in the form of ceramic particles with a particle size of 5-2000nm;
  • a vacuum atomization process can be used to prepare powders with better sphericity and higher laser absorption.
  • the use of the aluminum alloy powder for laser additive manufacturing can improve uneven powder spreading, heat accumulation and other problems, thereby reducing defects and cracks in the forming process and improving forming quality.
  • the above-mentioned aluminum alloy contains Mg in a mass fraction of 3.0-15.0%, preferably 4.0-6.0%.
  • Al-Mg alloy has good corrosion resistance, heat resistance, especially excellent weldability, making it suitable for laser additive manufacturing.
  • the Mg element has a large solid solubility in the Al matrix, and can also form Mg 5 Al 8 , Mg 2 Al 3 and other reinforcing phases with the Al matrix, which plays a role of solid solution strengthening and dispersion strengthening.
  • the above-mentioned aluminum alloy contains Sc in a mass fraction of 0.1-3.0%, preferably 0.1-1.0%.
  • Sc element and Al matrix form Al 3 Sc particles, which can provide an effective nucleation base for the matrix, increase the nucleation rate, and greatly refine the grain size.
  • the above-mentioned aluminum alloy contains Zr in a mass fraction of 0.1-3.0%, preferably 0.1-1.0%.
  • the addition of Zr element can replace part of Sc atoms to form Al 3 (Sc, Zr) x particles, which have better thermal stability and improve the high temperature mechanical properties of the material.
  • the above-mentioned aluminum alloy contains Mn in a mass fraction of 0.1-2.0%, preferably 0.1-1.0%.
  • Mn element can form MnAl 6 dispersed particles with Al matrix and hinder the growth of crystal grains; Mn element can also dissolve the impurity element Fe to form (Fe, Mn)Al 6 particles, reducing the harmful effects of Fe.
  • the above-mentioned aluminum alloy contains TiB 2 in a mass fraction of 0.5-12.0%, preferably 1.0-6.0%, and particularly preferably 1.0-4.5%.
  • the TiB 2 exists in the form of ceramic particles with a particle size of 5-2000 nm.
  • TiB 2 particles can not only be used as an effective nucleation substrate for Al to refine the grain size; it can also affect the diffusion rate of alloying elements Sc, Zr, and Mn, and improve the morphology and distribution of the second phase.
  • TiB 2 particles can also improve the heat distribution during the laser additive manufacturing process, and reduce residual stress and anisotropy.
  • step A2 Mix KBF 4 and K 2 TiF 6 uniformly, add them to the melt obtained in step A1 after drying, and react with stirring.
  • the reaction time is 5-60 min, and the scum is removed;
  • the mass ratio of KBF 4 to K 2 TiF 6 is 1:0.5 to 1:2;
  • step A3 Add Al-Zr master alloy, Al-Sc master alloy, Al-Mn master alloy and Mg to the melt obtained in step A2, degas and refine, temperature 650 ⁇ 900°C, time 10 ⁇ 20min, strip off float Slag
  • step A4 Gas atomize the melt obtained in step A3 to obtain the aluminum alloy powder.
  • the described aerosolization is a conventional technology, which can be referred to the method reported in patent CN107262730A. Specifically, it includes the following steps:
  • the melt is heated to 700-1000°C, and atomized under the protection of Ar and/or He gas, the atomization pressure is 0.5-10MPa, and the nozzle diameter used for atomization is 0.5-5mm.
  • the aluminum alloy powder containing TiB 2 ceramic particles is particularly suitable for laser additive manufacturing and includes the following steps:
  • the aluminum alloy powder provided by the present invention is sieved to leave a powder with a particle size ranging from 15 to 53 ⁇ m, and a metal printer is used to prepare the sample drawn in step S1;
  • step S3 Perform subsequent heat treatment on the sample obtained in step S2 to further improve performance.
  • the Selective Laser Melting (SLM) technology is used in step S2, the laser power is 150-350 W, the scanning speed is 200-2000 mm/s, the scanning interval is 0.05-0.20 mm, and the layer thickness is 30-40 ⁇ m.
  • SLM Selective Laser Melting
  • the heat treatment process in step S3 is a heating temperature of 300-350°C, a holding time of 1-8h, and air cooling.
  • the sample density of the aluminum alloy powder containing TiB 2 ceramic particles after being formed by SLM can reach more than 99%, the yield strength after heat treatment is 540MPa, the tensile strength is 550MPa, the elongation after fracture is 6.2%, and there is no obvious difference.
  • Anisotropy can meet the needs of applications in related fields.
  • test method of performance parameters can adopt the method specified in ASTM B557-15 standard.
  • the balance is Al and unavoidable impurities.
  • the preparation method is as follows:
  • the melt is heated to 850°C, and atomized under the protection of Ar gas, the atomization pressure is 3.0MPa, and the diameter of the nozzle used for atomization is 4.0mm to obtain the aluminum alloy powder;
  • the above aluminum alloy powder is sieved to leave a powder with a particle size ranging from 15 to 53 ⁇ m, and the sample is formed using SLM technology.
  • the process parameters are laser power 250W, scanning speed 800mm/s, scanning distance 0.10mm, and layer thickness 30 ⁇ m;
  • the density of the sample formed by the powder through SLM can reach more than 99%, the yield strength after heat treatment is 540MPa, the tensile strength is 550MPa, the elongation after fracture is 6.2%, and there is no obvious anisotropy.
  • the balance is Al and unavoidable impurities.
  • the preparation method is as follows:
  • the melt is heated to 820°C, and atomized under the protection of He gas, the atomization pressure is 3.5MPa, and the diameter of the nozzle used for atomization is 4.2mm to obtain the aluminum alloy powder;
  • the above aluminum alloy powder is sieved to leave a powder with a particle size ranging from 15 to 53 ⁇ m, and the sample is formed by SLM technology.
  • the process parameters are laser power 225W, scanning speed 1000mm/s, scanning distance 0.15mm, and layer thickness 40 ⁇ m;
  • the density of the sample after the powder is formed by SLM can reach more than 99%, the yield strength after heat treatment is 530MPa, the tensile strength is 538MPa, the elongation after fracture is 4.4%, and there is no obvious anisotropy.
  • the balance is Al and unavoidable impurities.
  • the preparation method is as follows:
  • the melt is heated to 820°C, and atomized under the protection of He gas, the atomization pressure is 3.5MPa, and the diameter of the nozzle used for atomization is 4.2mm to obtain the aluminum alloy powder;
  • the above aluminum alloy powder is sieved to leave a powder with a particle size ranging from 15 to 53 ⁇ m, and the sample is formed using SLM technology.
  • the process parameters are laser power 175W, scanning speed 500mm/s, scanning distance 0.05mm, and layer thickness 40 ⁇ m;
  • the density of the sample after the powder is formed by SLM can reach more than 99%, the yield strength after heat treatment is 535MPa, the tensile strength is 548MPa, the elongation after fracture is 2.6%, and there is no obvious anisotropy.
  • the balance is Al and unavoidable impurities.
  • the preparation method is as follows:
  • the melt is heated to 850°C, and atomized under the protection of He gas, the atomization pressure is 3.0MPa, and the diameter of the nozzle used for atomization is 4.0mm, to obtain the aluminum alloy powder;
  • the above aluminum alloy powder is sieved to leave a powder with a particle size ranging from 15 to 53 ⁇ m, and the sample is formed using SLM technology.
  • the process parameters are laser power 325W, scanning speed 1500mm/s, scanning distance 0.17mm, and layer thickness 40 ⁇ m;
  • the density of the sample formed by the powder through SLM can reach more than 99%, the yield strength after heat treatment is 545MPa, the tensile strength is 546MPa, the elongation after fracture is 1.8%, and there is no obvious anisotropy.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Powder Metallurgy (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)

Abstract

La présente invention concerne une poudre d'alliage d'aluminium contenant des particules de céramique TiB2 et son application. La poudre d'alliage d'aluminium comprend de 3,0 à 15,0% de Mg, de 0,1 à 3,0% de Sc, de 0,1 à 3,0% de Zr, de 0,1 À 2,0% de Mn et de 0,5 à 12,0% de TiB2, le reste étant de l'Al et les impuretés inévitables. La poudre d'alliage d'aluminium peut être utilisée pour la fabrication additive au laser, et les exigences d'application dans des domaines associés peuvent être satisfaites.
PCT/CN2020/083119 2019-07-01 2020-04-03 Poudre d'alliage d'aluminium contenant des particules de céramique tib2 et application de celle-ci WO2021000617A1 (fr)

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AU2021100222A AU2021100222A4 (en) 2019-07-01 2021-01-14 Aluminum alloy powder containing tib2 ceramic particles and application thereof

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CN201910585559.8A CN110229978A (zh) 2019-07-01 2019-07-01 含有TiB2陶瓷颗粒的铝合金粉末及其应用
CN201910585559.8 2019-07-01

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Cited By (2)

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Publication number Priority date Publication date Assignee Title
CN113996809A (zh) * 2021-11-05 2022-02-01 安徽工程大学 一种TiB2颗粒增强增材制造高强Al-Mg-Sc合金材料的制备工艺
CN115430843A (zh) * 2022-08-16 2022-12-06 上海交通大学 一种双相颗粒增强增材铝合金及其制备方法

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* Cited by examiner, † Cited by third party
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CN110229978A (zh) * 2019-07-01 2019-09-13 上海交通大学 含有TiB2陶瓷颗粒的铝合金粉末及其应用
CN115044806B (zh) * 2022-06-17 2023-04-18 大连科天新材料有限公司 一种铝合金添加剂及其制备方法和应用

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CN115430843A (zh) * 2022-08-16 2022-12-06 上海交通大学 一种双相颗粒增强增材铝合金及其制备方法

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